> The scientists found microplastics in almost every sample they collected. In total, 4 percent of the identifiable dust particles were plastic. Brahney and her

> The scientists found microplastics in almost every sample they collected. In total, 4 percent of the identifiable dust particles were plastic. Brahney and her colleagues “immediately realized the gravity of what we were seeing,” she says. “That was a moment of being just completely astounded.”